2002 ZL 1, HOW MUCH HP!

[NEW]

Hi, just curious regarding this,

If i understand everything right the 2002 ZL1 comes when transformed with 400 HP,!!???

But is there anybody not tuning this cars to more HP, before taking delivery??

What is done to acheive the 600 HP∆s, is it head work, new cam, etc etc?+, is there several stages on this engine package so that you like go from 400 to 450, and so on???



Thanks

NEWs [img]/ubbthreads/images/icons/confused.gif[/img]

[82z96ss]

O2 ZL1 have 3 phases

1 is a LS6 motor like the one in the 405 ZO6's 400/410
2 modified LS6 motor 475/something like 450
3 no longer a LS6 motor but a [img]/ubbthreads/images/icons/ooo.gif[/img] 427 600/575

will find some info on the ZL1's at GMMGINC.com

[NEW]

Would that mean that they stroke the engine to 427 cid, first at phase 3?

So is almost everybody buying a 02 ZL1 buying the phase 3 package, or is it a nice spread between the 3 packages?

[img]/ubbthreads/images/icons/smile.gif[/img]

[barker]

It is about 1/3 Phase 1
1/3 Phase 2
1/3 Phase 3
It is funny but that is just the way the #'s fell. There was not a real plan, it was just the way it turned out.

[GRB]

NEW - I believe all the 427s from GMMG will have C5R blocks. As far as the stages go the numbers may be misleading. For example, I chose to take delivery of mine as a stage I but am in the process of having a C5R 427 built with the new 090 casting C5R heads. I am also going with some other after market parts such as a new clutch and rear end.

[Stefano]

What type of Rear End will you be installing?

[82z96ss]

Like GRB the numbers are misleading because I started my order with the phase 2 package which was installed, then turned around and had the phase 3 package installed.
500 rhp that would be nice [img]/ubbthreads/images/icons/ooo.gif[/img] If you are seeing some serious racing then the rear and clutch upgrades would be mandatory. But hopefully with being a street car, occassionaly racer the stock stuff will do.

I would also think if you are upgrading the rear clutch and suspension then you better go with the roll cage.

Don't think to many tracks are going to let us see track time with out a cage. Could be wrong though.

[CWilliams]

82z96ss- So what happened to the phase II parts you had? Did Matt take them back towards the Phase III? Complete motor swap between phase II and III right?

[CWilliams]

GRB- I thought GMMG did the upgrades, where/how does Lamar fit in to the picture on the '02 ZL1? Just curious.

Thanks

[82z96ss]

you were right about the phase 2 moving to the phase 3 but since I waited too late (Billy had already had the phase 2 motor in the car and I got to see it started), it would still cost me an extra 1500 plus the stage 3 cost. I (well with wife's permission)decided with the cost difference and someone else possible getting my LS6 #46 ZL1 stamped motor that I would get it and install it into my project 82 Z28.